OK. If your NIC obtains an IP address automatically, it should work. So maybe you have chosen to give your system a static address? If so, do this:
- Click Start
- Type Network Connections to the search field
- Right click Local Area Connection, choose Properties
- Click Internet Protocol Version 4 (TCP /IPv4)
- Click Properties
- If you have chosen to obtain IP automatically, the IP, Subnet and Default Gateway fields are grayed out and everything should be OK.
- If you have chosen to use static IP, the IP address should be 192.168.0.X, where X can be anything from 2 to 255, Subnet should be 255.255.255.0 and Default Gateway 192.168.0.1
Check this first, come back to tell what you found.